131103031 has 4 divisors (see below), whose sum is σ = 138814992. Its totient is φ = 123391072.

The previous prime is 131103029. The next prime is 131103041. The reversal of 131103031 is 130301131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131103031 - 2¹ = 131103029 is a prime.

It is a super-2 number, since 2×131103031² = 34376009474773922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131103041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3855955 + ... + 3855988.

It is an arithmetic number, because the mean of its divisors is an integer number (34703748).

Almost surely, 2^131103031 is an apocalyptic number.

131103031 is a deficient number, since it is larger than the sum of its proper divisors (7711961).

131103031 is an equidigital number, since it uses as much as digits as its factorization.

131103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711960.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 131103031 is about 11450.0231877494. The cubic root of 131103031 is about 508.0084202523.

Adding to 131103031 its reverse (130301131), we get a palindrome (261404162).

The spelling of 131103031 in words is "one hundred thirty-one million, one hundred three thousand, thirty-one".